Cleanup, hex formatting

Marlin/src/HAL/DUE/fastio.h

@@ -33,7 +33,7 @@
  * For ARDUINO_ARCH_SAM
  * Note the code here was specifically crafted by disassembling what GCC produces
  * out of it, so GCC is able to optimize it out as much as possible to the least
- * amount of instructions. Be very carefull if you modify them, as "clean code"
+ * amount of instructions. Be very careful if you modify them, as "clean code"
  * leads to less efficient compiled code!!
  */
 

Marlin/src/HAL/LPC1768/MarlinSerial.h

@@ -60,8 +60,8 @@ extern MSerialT MSerial1;
 extern MSerialT MSerial2;
 extern MSerialT MSerial3;
 
-// Consequently, we can't use a RuntimeSerial either. The workaround would be to use a RuntimeSerial<ForwardSerial<MarlinSerial>> type here
-// Right now, let's ignore this until it's actually required.
+// Consequently, we can't use a RuntimeSerial either. The workaround would be to use
+// a RuntimeSerial<ForwardSerial<MarlinSerial>> type here. Ignore for now until it's actually required.
 #if ENABLED(SERIAL_RUNTIME_HOOK)
   #error "SERIAL_RUNTIME_HOOK is not yet supported for LPC176x."
 #endif

Marlin/src/core/serial.h

@@ -62,11 +62,11 @@ extern uint8_t marlin_debug_flags;
 //
 // Serial redirection
 //
-// Step 1: Find what's the first serial leaf
+// Step 1: Find out what the first serial leaf is
 #if BOTH(HAS_MULTI_SERIAL, SERIAL_CATCHALL)
-  #define _SERIAL_LEAF_1  MYSERIAL
+  #define _SERIAL_LEAF_1 MYSERIAL
 #else
-  #define _SERIAL_LEAF_1  MYSERIAL1
+  #define _SERIAL_LEAF_1 MYSERIAL1
 #endif
 
 // Hook Meatpack if it's enabled on the first leaf
@@ -78,7 +78,8 @@ extern uint8_t marlin_debug_flags;
   #define SERIAL_LEAF_1 _SERIAL_LEAF_1
 #endif
 
-// Step 2: For multiserial, handle the second serial port as well
+// Step 2: For multiserial wrap all serial ports in a single
+//         interface with the ability to output to multiple serial ports.
 #if HAS_MULTI_SERIAL
   #define _PORT_REDIRECT(n,p) REMEMBER(n,multiSerial.portMask,p)
   #define _PORT_RESTORE(n,p)  RESTORE(n)

Marlin/src/core/serial_hook.h

@@ -67,7 +67,7 @@ struct BaseSerial : public SerialBase< BaseSerial<SerialT> >, public SerialT {
 
   SerialFeature features(serial_index_t index) const { return CALL_IF_EXISTS(SerialFeature, static_cast<const SerialT*>(this), features, index);  }
 
-  // We have 2 implementation of the same method in both base class, let's say which one we want
+  // Two implementations of the same method exist in both base classes so indicate the right one
   using SerialT::available;
   using SerialT::read;
   using SerialT::begin;
@@ -134,7 +134,7 @@ struct ForwardSerial : public SerialBase< ForwardSerial<SerialT> > {
   ForwardSerial(const bool e, SerialT & out) : BaseClassT(e), out(out) {}
 };
 
-// A class that's can be hooked and unhooked at runtime, useful to capturing the output of the serial interface
+// A class that can be hooked and unhooked at runtime, useful to capture the output of the serial interface
 template <class SerialT>
 struct RuntimeSerial : public SerialBase< RuntimeSerial<SerialT> >, public SerialT {
   typedef SerialBase< RuntimeSerial<SerialT> > BaseClassT;

Marlin/src/gcode/control/M7-M9.cpp

@@ -72,15 +72,15 @@ void GcodeSuite::M9() {
  * M8: Air Assist On
  */
 void GcodeSuite::M8() {
-  planner.synchronize(); 
+  planner.synchronize();
   cutter.air_assist_enable();   // Turn on Air Assist pin
 }
 
 /**
  * M9: Air Assist Off
  */
 void GcodeSuite::M9() {
-  planner.synchronize(); 
+  planner.synchronize();
   cutter.air_assist_disable();  // Turn off Air Assist pin
 }
 

Marlin/src/gcode/gcode.cpp

@@ -1060,7 +1060,7 @@ void GcodeSuite::process_subcommands_now_P(PGM_P pgcode) {
     strncpy_P(cmd, pgcode, len);                      // Copy the command to the stack
     cmd[len] = '\0';                                  // End with a nul
     parser.parse(cmd);                                // Parse the command
-    process_parsed_command(true);                     // Process it
+    process_parsed_command(true);                     // Process it (no "ok")
     if (!delim) break;                                // Last command?
     pgcode = delim + 1;                               // Get the next command
   }
@@ -1073,7 +1073,7 @@ void GcodeSuite::process_subcommands_now(char * gcode) {
     char * const delim = strchr(gcode, '\n');         // Get address of next newline
     if (delim) *delim = '\0';                         // Replace with nul
     parser.parse(gcode);                              // Parse the current command
-    process_parsed_command(true);                     // Process it
+    process_parsed_command(true);                     // Process it (no "ok")
     if (!delim) break;                                // Last command?
     *delim = '\n';                                    // Put back the newline
     gcode = delim + 1;                                // Get the next command